{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949071,-0.315063,0.000000,0.000000,0.176117,-0.530522,0.829174,0.000000,-0.260691,0.785287,0.561573,0.000000,-1664483.085052,5013965.335838,3561571.304833,1],    "boundingVolume": {    "region": [1.891250,0.596232,1.891388,0.596339,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447566.b3dm"}}}